Ultrafast lasers have become a pivotal area of research and development in the laser technology field. Today, these lasers play a crucial role in advanced manufacturing sectors such as semiconductor wafer processing, solar cell scribing, and the cutting of electrode materials for new energy batteries. With both technological innovation and growing applications, the number of companies investing in ultrafast lasers is rapidly increasing.
What is a Thin Sheet Ultrafast Laser?
A thin sheet ultrafast laser is a high-performance laser designed with a thin sheet gain medium. Its core feature lies in the unique thin crystal structure (typically 100–200 microns thick). To overcome technical challenges, such lasers utilize regenerative amplification components with long cavity lengths (usually over 2 meters), requiring numerous optical lenses to compress the overall size of the laser system.
Schematic Diagram of Thin-Sheet Ultrafast Laser
Key Advantages of Thin Sheet Ultrafast Lasers
Compared to traditional solid-state lasers, thin sheet ultrafast lasers offer several distinct advantages:
1.Enhanced Heat Dissipation Efficiency
The thin sheet structure utilizes surface cooling technology, which significantly improves heat dissipation efficiency. This effectively suppresses thermal lensing effects, ensuring high beam quality (M² < 1.2) even under high-power output conditions, which is vital for precision processing.
Thin Sheet Ultrafast Laser
2.Uniform Energy Distribution and High Performance
The gain medium achieves uniform energy distribution through multiple passes of pump light. This allows the laser to deliver both high peak power (in the gigawatt range) and high repetition rates (in the megahertz range). These characteristics enable the laser to achieve a “cold processing” effect during micro-nano processing, which is essential for delicate material interactions.
3.Modular Design for Scalability
The modular design of thin sheet ultrafast lasers allows for power scaling up to kilowatt levels while maintaining excellent beam stability. This design provides great flexibility and reliability for a wide range of industrial applications.
4.Ideal Light Source for Cutting-Edge Research
These lasers are not only suited for precision manufacturing but also offer ideal light sources for frontier research areas like strong-field physics and attosecond science due to their unique characteristics.
Technological Core: Continuous vs. Pulsed Lasers
The operational mode of a laser is the technological heart of any laser system. Generally, lasers are classified into continuous-wave (CW) lasers and pulsed lasers. Ultrafast lasers fall into the category of ultrashort-pulse lasers. Over recent years, Han’s Laser has focused on developing ytterbium-doped crystal regenerative amplification technology, aiming to lead the market in high-end ultrafast lasers.
Han’s Laser’s Contribution to the Ultrafast Laser Market
Han’s Laser has been at the forefront of introducing thin sheet ultrafast lasers, responding to the growing demands and upgrades in laser applications. The thin sheet ultrafast laser series is based on ytterbium-doped crystal regenerative amplification technology, which is the preferred solution for generating ultrashort pulses with high stability, large energy, and high average power. With exceptional product performance and a forward-looking technological vision, these lasers are poised to make significant strides in high-end applications.
Key Features of Ytterbium-Doped Ultrafast Lasers
Ytterbium-doped ultrafast lasers offer several distinct features:
High Average Output Power
The laser offers excellent power outputs with infrared (>300W), green (>150W), and ultraviolet (>80W) options.
Ultra-Short Pulse Duration (<8ps)
This ensures minimal thermal effects during processing, ideal for precision cutting and material modification.
Excellent Beam Quality
The laser maintains a beam quality with M² < 1.2, essential for high-precision applications.
High Stability
Both pulse and power stability are maintained, ensuring consistent performance during demanding tasks.
Narrow Spectral Line
The narrow spectral line facilitates efficient harmonic generation, enabling applications like second and third harmonic generation.
High-end Applications
These lasers are ideal for high-precision micro-machining applications in industries such as:
Thin-Sheet Metal Cutting: Used for applications like cardiovascular stent cutting.
Electronics Industry: Cutting and trenching of flexible printed circuits (FPC), printed circuit boards (PCB), and system-in-package (SIP).
Process Effect
Semiconductor and Photovoltaic Manufacturing: Laser scribing of solar cells, including BC (Back Contact) solar cell cutting and perovskite solar cell scribing.
Silicon Nitride Ceramic, 0.32mm Thickness
Awards and Recognitions
Han’s Laser’s thin sheet ultrafast lasers have received multiple patents and accolades, including the Guangdong Province Science and Technology Progress Award, the China Electronics Society Science and Technology Award, the “2024 Laser Golden Light Award” for new products, and the “2024 Red Light Award” for innovation breakthroughs in the laser industry. These honors reflect the company’s commitment to advancing laser technology and expanding its market presence.
Conclusion
With its unparalleled advantages in power, precision, and stability, thin-sheet ultrafast lasers are making increasing contributions to industries that require high quality and precision standards. Han’s Laser continues to innovate and lead the development of high-power ultrafast laser systems, pushing the boundaries of what’s possible in precision manufacturing and scientific research.
For any inquiries or to learn more about how Han’s Laser can help with your industrial applications, don’t hesitate to reach out today.